package com.xyh.cart.controller;

import com.xyh.cart.interceptor.CartInterceptor;
import com.xyh.cart.service.CartService;
import com.xyh.cart.vo.Cart;
import com.xyh.cart.vo.CartItem;
import com.xyh.cart.vo.UserInfoTo;
import com.xyh.common.constant.AuthServerConstant;
import org.bouncycastle.math.raw.Mod;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.servlet.mvc.support.RedirectAttributes;

import javax.servlet.http.HttpSession;
import java.util.List;
import java.util.concurrent.ExecutionException;


@Controller
public class CartController {

    @Autowired
    CartService cartService;

    /**
     * 浏览器有一个 cookie： user-key：标识用户身份，一个月后过期
     * 如果第一次使用 jd 的购物车功能，都会给一个临时的用户身份
     * 浏览器以后每次保存，每次访问都会带上这个 cookie
     *
     * 登录 ： session 有
     * 没登陆： 按照 cookie 里面带来的 user-key 来做
     * 第一次： 如果没有临时用户，帮忙创建一个临时用户
     */
    @GetMapping("/cart.html")
    public String cartListPage(Model model) throws ExecutionException, InterruptedException {
        //1.快速得到用户信息，id，user-key
        Cart cart = cartService.getCart();
        model.addAttribute("cart",cart);
        return "cartList";
    }

    @ResponseBody
    @GetMapping("/currentUserCartItems")
    public List<CartItem> getCurrentUserCartItems(){
        return cartService.getUserCartItems();
    }

    @GetMapping("/deleteItem")
    public String deleteItem(@RequestParam("skuId") Long skuId){
        cartService.deleteItem(skuId);
        return "redirect:http://cart.gulimall.com/addToCartSuccess.html";
    }

    @GetMapping("/countItem")
    public String countItem(@RequestParam("skuId") Long skuId,@RequestParam("num") Integer num){
        cartService.changeItemCount(skuId,num);
        return "redirect:http://cart.gulimall.com/addToCartSuccess.html";
    }

    @GetMapping("/checkItem")
    public String checkItem(@RequestParam("skuId") Long skuId,@RequestParam("check") Integer check){
        cartService.checkItem(skuId,check);
        return "redirect:http://cart.gulimall.com/addToCartSuccess.html";
    }

    /**
     * 添加商品到购物车
     */
    @GetMapping("/addToCart")
    public String addToCart(@RequestParam("skuId") Long skuId, @RequestParam("num") Integer num, RedirectAttributes attributes) throws ExecutionException, InterruptedException {

        cartService.addToCart(skuId,num);
        attributes.addAttribute("skuId",skuId);
        return "redirect:http://cart.gulimall.com/addToCartSuccess.html";
    }

    /**
     * 跳转到成功页
     */
    @GetMapping("/addToCartSuccess.html")
    public String addToCartSuccessPage(@RequestParam("skuId") Long skuId,Model model){
        //重定向到成功页面，再次查询购物车数据即可
        CartItem item = cartService.getCartItem(skuId);
        model.addAttribute("item",item);
        return "success";
    }

}
